Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Ultralight corundum thermal insulation material and preparation method thereof
The invention discloses a preparation method of an ultra-light corundum thermal insulation material. The preparation method comprises the following steps: mixing a foaming agent and a modifier, adding water, and stirring to obtain a modified foaming agent dispersion liquid; uniformly mixing aluminum oxide hollow spheres, corundum powder, micro powder, a binding agent, a dispersing agent and fibers to obtain a mixed raw material; adding the modified foaming dispersion liquid into the mixed raw material, stirring and fully foaming to obtain mixed slurry; the mixed slurry is poured into a mold, and after the mold is automatically filled with the mixed slurry, the surface is flattened; after curing is completed, demolding and drying are conducted, and a green body is obtained; the blank is sintered, the porosity of the obtained ultra-light corundum heat insulation material is 55%-80%, the volume density is 0.90-1.20 g/cm < 3 >, and the compression strength is larger than or equal to 15 MPa after the ultra-light corundum heat insulation material is sintered at the temperature of 1200 DEG C. The problems of poor pore uniformity, low material strength and high heat conductivity coefficient of the aluminum oxide hollow sphere light heat insulation material can be solved.
本发明公开一种超轻刚玉质隔热材料的制备方法：将发泡剂和改性剂混合后加水搅拌，得到改性发泡剂分散液；将氧化铝空心球、刚玉粉、微粉、结合剂、分散剂和纤维混合均匀，得到混合原料；向混合原料中加入改性发泡分散液，搅拌并充分发泡，得到混合浆体；将混合浆体倒入模具中，待混合浆体自动填满模具后，抹平表面；养护完成后脱模，并干燥，得到坯体；将坯体进行烧结，得到的超轻刚玉质隔热材料气孔率为55～80％，体积密度为0.90～1.20g/cm3，1200℃烧后耐压强度大于或等于15MPa。本发明可以解决氧化铝空心球轻质隔热材料气孔均一性差、材料强度低以及导热系数高的问题。
Ultralight corundum thermal insulation material and preparation method thereof
The invention discloses a preparation method of an ultra-light corundum thermal insulation material. The preparation method comprises the following steps: mixing a foaming agent and a modifier, adding water, and stirring to obtain a modified foaming agent dispersion liquid; uniformly mixing aluminum oxide hollow spheres, corundum powder, micro powder, a binding agent, a dispersing agent and fibers to obtain a mixed raw material; adding the modified foaming dispersion liquid into the mixed raw material, stirring and fully foaming to obtain mixed slurry; the mixed slurry is poured into a mold, and after the mold is automatically filled with the mixed slurry, the surface is flattened; after curing is completed, demolding and drying are conducted, and a green body is obtained; the blank is sintered, the porosity of the obtained ultra-light corundum heat insulation material is 55%-80%, the volume density is 0.90-1.20 g/cm < 3 >, and the compression strength is larger than or equal to 15 MPa after the ultra-light corundum heat insulation material is sintered at the temperature of 1200 DEG C. The problems of poor pore uniformity, low material strength and high heat conductivity coefficient of the aluminum oxide hollow sphere light heat insulation material can be solved.
本发明公开一种超轻刚玉质隔热材料的制备方法：将发泡剂和改性剂混合后加水搅拌，得到改性发泡剂分散液；将氧化铝空心球、刚玉粉、微粉、结合剂、分散剂和纤维混合均匀，得到混合原料；向混合原料中加入改性发泡分散液，搅拌并充分发泡，得到混合浆体；将混合浆体倒入模具中，待混合浆体自动填满模具后，抹平表面；养护完成后脱模，并干燥，得到坯体；将坯体进行烧结，得到的超轻刚玉质隔热材料气孔率为55～80％，体积密度为0.90～1.20g/cm3，1200℃烧后耐压强度大于或等于15MPa。本发明可以解决氧化铝空心球轻质隔热材料气孔均一性差、材料强度低以及导热系数高的问题。
Ultralight corundum thermal insulation material and preparation method thereof
一种超轻刚玉质隔热材料及其制备方法
QI JIN (Autor:in) / ZHAN XUEWU (Autor:in) / FAN QINGSONG (Autor:in) / ZHANG WEI (Autor:in) / CHEN CHANGPING (Autor:in) / FAN SUIQING (Autor:in) / SUN RONGHAI (Autor:in)
05.04.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Preparation method of ultralight fiber sponge modified ardealite thermal insulation wallboard
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